Influence of Nanoparticle Type, Size and Concentration on Performance and Safety of Epoxy Composite Adhesively Bonded Metal Joints: A Critical Review

2017 ◽  
pp. 61-66
Author(s):  
Guillaume Louchaert ◽  
Rajnish Garg ◽  
Amneesh Singla ◽  
Rajeev Gupta ◽  
M. S. Goyat
Keyword(s):  
Critical Review ◽  
Epoxy Composite ◽  
Adhesively Bonded ◽  
Type Size

Acoustic emission characterization of local bending behavior for adhesively bonded hybrid external patch repaired glass/epoxy composite laminates

2018 ◽  
Vol 18 (3) ◽  
pp. 739-756 ◽  
Author(s):  
J Jefferson Andrew ◽  
V Arumugam ◽  
C Ramesh
Keyword(s):  
Acoustic Emission ◽  
Composite Laminates ◽  
Volume Fraction ◽  
Epoxy Composite ◽  
Glass Fibers ◽  
Residual Deformation ◽  
Woven Fabrics ◽  
Adhesively Bonded ◽  
Indentation Tests ◽  
Bending Response

This article investigates the influence of homogeneous and hybrid external patches based on glass and Kevlar plain weave woven fabrics on local bending response of adhesively bonded external patch repairs in damaged glass/epoxy composite laminates. The intent of using hybrid external patches was to combine the excellent high displacement to failure property of Kevlar fiber as a ductile reinforcement with the superior mechanical property of glass fiber as a brittle reinforcement. The undamaged normal specimens were taken as the standard specimen for evaluation of residual mechanical properties. In all hybrid patches, the proportion of Kevlar and glass fibers was equal (i.e. 50% of Kevlar and 50% of glass by volume fraction), while lay-up configurations were different. This further allowed studying the associated effects of hybridization and lay-up configuration on local bending response of the repaired laminates. All the specimens were subjected to cyclic quasi-static indentation tests with a step loading method. The indentation tests have also been monitored in real time by acoustic emission system. The acoustic emission results illustrated various damage profiles and correlates with the mechanical test results to point out the load to a transformation in damage mechanisms during indentation loading with respect to the effect of each patch material on the performance of the repaired glass/epoxy specimens. Results showed that hybridization and lay-up configurations of the external patches played a significant role on local bending response (i.e. ultimate load, stiffness, residual deformation, displacement to failure, and damage pattern) of the repaired glass/epoxy specimens. Specimens repaired using intra-ply hybrid patches showed the best local bending response.

Strength of Adhesively-Bonded Thbular Single Lap Carbon/Epoxy Composite-Steel Joints

1999 ◽  
Vol 33 (20) ◽  
pp. 1897-1917 ◽  
Author(s):  
Young Goo Kim ◽  
Je Hoon Oh ◽  
Dai Gil Lee
Keyword(s):  
Epoxy Composite ◽  
Adhesively Bonded ◽  
Steel Joints ◽  
Composite Steel
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